What other definition of biological life is there than metabolic functioning? You are entitled to your own opinion but you are not entitled to your own facts.
“You are entitled to your own opinion but you are not entitled to your own facts”
There are no concrete facts upon which to base a conclusion about the start of life.
Upon further thought, I believe that the act of conception is sacred. Were one of my children to get pregnant I would not advise an abortion unless it was apparent that it would avert a larger disaster.